Fig. 6From: The global inhomogeneity index assessed by electrical impedance tomography overestimates PEEP requirement in patients with ARDS: an observational studyChanges in the percentage of alveolar overdistension (OD; triangle) and collapse (CL; square) during an incremental and decremental PEEP trial in patients with ARDS (a) and control patients (b). The changes in percentages are significantly different between OD and CL during the PEEP trial in both ARDS as control patients (p < 0.0001)Back to article page